Reading String Data

Question

Am quite new to java and having trouble with the syntax.
Using package java.net, I am trying to read the output of an http client. I can echo the ouptut to screen but prefer not to do that.
I tried the following but it sometimes raises an eInvalidPointer exception, and the compiler indicates that the string array resp may not be initialized.
Would appreciate an idea of the best way to read the returned data from this http client.
import java.net.*;
import java.io.*;
import java.util.*;
class GetAvgLatency{
public static void connectAndGet( String targetURL ){
String dataLine;
String[] resp;
try{
URL url = new URL( targetURL );
//Open a connection to the URL and get a URLConnection object.
URLConnection urlConnection = url.openConnection();
//Use the connection to get an InputStream object.
// Use the InputStream object to instantiate a DataInputStream object.
     BufferedReader htmlPage =
     new BufferedReader(new InputStreamReader(url.openStream()));
//Use the DataInputStream object to read and store the received data one line at a time.
int i = 0;
while((dataLine = htmlPage.readLine()) != null){
     resp[ i ] = dataLine;
     i++;
} //end while loop
} //end try
catch(UnknownHostException e){
System.out.println(e);
System.out.println("Must be online to run properly.");
} //end catch
catch(MalformedURLException e){System.out.println(e);}
catch(IOException e){System.out.println(e);}
} //connectAndGet
public static void main(String[] args){
String TheHost;
int imax = 100;
long t0, t1, deltaT;
long sum = 0;
float avg;
// if ( args == null )
TheHost = "Http://icmicronjwc/scripts/runisa.dll?eroicaLT:pgloadtest1";
// else     
//      TheHost = args[ 0 ];
System.out.println( "Testing " + TheHost );
System.out.println( "" );
for ( int i = 0; i < imax; i++ ){
t0 = System.currentTimeMillis();          
connectAndGet( TheHost );
t1 = System.currentTimeMillis();          
deltaT = t1 - t0;
System.out.print( i + " " + deltaT + " " );
sum += deltaT;
System.out.println( "" );
System.out.println( "" );
avg = sum/imax;
System.out.println( "average app latency for " + imax +
" requests is " + avg + " ms" );
} //end main
} //end class HttpTest
tks,
jwc

Answer 1

You should create your array this way : String[] resp = new String[10]. If not, the compiler complains that it is not initialized.
But this methods is not good. To store your strings, you should use a Vector, LinkedList or whatever you want, because you don't know how many lines you are going to store :
Vector resp = new Vector();
while((dataLine = htmlPage.readLine()) != null){
resp.add(dataLine);
i++;
} //end while loop